Title
A comparative study of preferred body temperatures and critical thermal tolerance limits among populations of Zootoca vivipara (Squamata : Lacertidae) along an altitudinal gradient A comparative study of preferred body temperatures and critical thermal tolerance limits among populations of Zootoca vivipara (Squamata : Lacertidae) along an altitudinal gradient
Author
Publication type
article
Publication
Athens, Ohio ,
Subject
Biology
Source (journal)
Journal of herpetology. - Athens, Ohio, 1968, currens
Volume/pages
35(2001) :3 , p. 486-492
ISSN
0022-1511
ISI
000171136900015
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We compared preferred body temperatures, critical thermal minima, and maxima, and tolerance ranges among four populations of Zootoca vivipara (formerly Lacerta vivipara) distributed along an altitudinal gradient (250-1450 m) to examine whether different thermal environments have induced a change in these thermal characteristics. Lizards in all populations had similar preferred body temperatures and critical thermal limits, suggesting that acclimation or adaptation of these traits to different thermal environments did not occur. Subadult females and gravid females preferred lower body temperatures than nongravid females and subadult and adult males. Preferred body temperatures differed among individuals of the same age and sex within a particular population. In contrast to the negligible among-population variation, preferred body temperatures varied considerably within populations in Z. vivipara.
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